Mr. Xia was skeptical of the laboratory technician's explanation, he walked around the laboratory twice, and suddenly asked, "Do you have any remaining wastewater samples for testing?" ”

"Each batch of samples is disposed of after testing, and we can go and take samples now if you need them." Several laboratory technicians naturally have a lot of respect for the chief engineer of the whole plant.

"How long will it take to take samples and tests?"

"Even the sampling tape for testing, about forty minutes."

"Okay, you can take a sample of the treated wastewater and let me see it."

Lao Xia waited with his assistant in the laboratory, ten minutes later, a laboratory technician came back with a sample, seeing that Lao Xia was anxious to know the results, she immediately started the test, after some operation, after more than 20 minutes, the laboratory technician handed a report to Lao Xia, "Mr. Xia, this is the test result of the sample just now, you can take a look." ”

After receiving the test report, Lao Xia repeatedly checked the above data, and from the test results of this sample, the indicators in the wastewater did meet the discharge standards.

Lao Xia returned the report to the laboratory technician, "Do you have all the test results since the start of the test?" Show it to me. ”

In the face of Mr. Xia, the laboratory technician did not dare to be the slightest slack, "Yes, yes, every time the test results are stored, they are all here." As he spoke, the laboratory technician handed Lao Xia a stack of reports that were sandwiched together.

After reading it from beginning to end, through comparison, Lao Xia found that the data on each report sheet was only a slight difference after the decimal point, indicating that the results were quite stable.

Walking to the test bench, Lao Xia picked up the sampling bottle just now, looked at the wastewater sample again, and sniffed at the mouth of the bottle, maybe he didn't smell any unpleasant smell, he even took two deep breaths at the mouth of the bottle.

"Mr. Xia, are you checking the smell of wastewater samples?" The assistant walked over.

"You come and smell if there is a smell." Lao Xia handed the bottle to his assistant.

Taking the sample bottle, the assistant carefully sniffed the mouth of the bottle, found no uncomfortable smell, took two deep breaths, and put the bottle on the test bench, "I didn't smell anything." ”

Lao Xia nodded, "Yes, I didn't find any smell, combined with these test results, it shows that steam distillation treatment of iron powder to reduce wastewater is effective, however, this is only the first step, although the organic matter in the wastewater is removed, the unpleasant smell is eliminated, but the color of the wastewater has not been disposed of, and it still cannot be directly discharged." ”

On the way back to the chief engineer's office, the assistant couldn't help but ask a question, "Mr. Xia, is it necessary for us to do a small test in the laboratory?" ”

"The plans have been proposed, the instruments and equipment and reagent raw materials have also been bought, and the small tests in the laboratory must be done, but we must hurry up and work, and we can no longer procrastinate as before."

In fact, these are all excuses, the reason why Lao Xia continues to insist on doing small tests in the laboratory is mainly to save his face, because he couldn't trust Fang Hanmin at that time, so he put forward the idea of verifying with small tests in the laboratory.

The chief engineer of the dignified Red Star Pharmaceutical Factory was slapped in the face by a young temporary worker, and Lao Xia's face was really not good-looking. Although he knew that Fang Hanmin's steam distillation test had been successful, the number one factory director Yuan did not talk about it to Lao Xia, after all, Fang Hanmin's test had only done the first step, and the color of the wastewater had not been removed, so it still could not be discharged directly.

Lao Yuan believes that when Fang Hanmin has gone through the entire process of wastewater treatment, removed the color of the wastewater, and the treated wastewater can be directly discharged, it is not too late to report to Lao Xia. ......

Lao Yang, the director of the workshop, knew for the first time that the steam distillation test had been successful, but the construction project of the settling tank he was responsible for had not yet been completed. Lao Yang was anxious about this.

This morning, Fang Hanmin took time to go to the construction site of the sedimentation tank to check the progress of the project, Lao Yang saw him and felt very sorry, "The sedimentation tank will take three to five days to be put into use, delaying your experiment!" ”

"Director, your speed is fast enough, the civil engineering is in a hurry, you can't do any less process, let alone three or five days, even if you wait for another ten days or eight days, it doesn't matter."

On the one hand, he knew that civil engineering was indeed time-consuming, even if Lao Yang had done his best to do this, but it was difficult to build three thousands of cubic meters of sedimentation tanks in more than ten days. In addition, from the beginning of the process improvement test of the "acylation" post, the workshop director Lao Yang gave Fang Hanmin a lot of understanding and help, and now the situation is a bit reversed, how can he not understand Lao Yang?

Fang Hanmin knows very well that the key to the success of the wastewater treatment process lies in the success of steam distillation, and as for the subsequent graded sedimentation, as long as the time is sufficient, there is no problem.

Now, the success of steam distillation shows that this wastewater treatment plan is completely feasible, and Fang Hanmin believes that the subsequent graded settlement will be delivered a few days earlier and a few days later, so there is no need to pay attention to it.

In order to obtain a better decolorization effect, Fang Hanmin suggested that a set of electromagnetic adsorption devices should be installed at the outlet of the final sedimentation tank to achieve better treatment results.

"Although it doesn't cost much to add this set of equipment, I'm afraid that the construction period will be delayed for a few days, won't it delay the time?" The sedimentation tank was not completed in time, and Lao Yang already felt that he had not done his job well, and if he postponed it, he thought that he could not explain it to the factory leaders and Fang Hanmin.

"Director, you don't have to think about it so much, the delay of the construction period is completely my business, it has nothing to do with you, what I care about is how to make the wastewater treatment process achieve the best results."

According to Fang Hanmin's request, after discussing with the project contractor, Lao Yang installed an electromagnetic adsorption device at the outlet of the last stage of the sedimentation tank, and the whole project was delivered seven days later.

Fang Hanmin personally commanded the linkage test, the first step, from the second workshop iron powder reduction section of the wastewater, through steam distillation, so that the organic matter in it can be fully recovered, and eliminate the odor in the wastewater, the wastewater from the first step into the sedimentation tank, the second step of treatment, after three levels of sedimentation and electromagnetic adsorption, from the last stage of the sedimentation tank discharge of wastewater, the type of water quality determines the success or failure of the wastewater treatment process.

From the first step to the time the wastewater leaves the outlet of the last stage of the tank, it takes 50 hours, of which two-thirds of the time is spent on the second stage of treatment, which is the third stage of sedimentation.

At around 11 p.m. on the third day, Fang Hanmin asked workers to take samples from the outlet of the last stage of the sedimentation tank for testing, and only when the indicators of the samples met the water quality standards stipulated by the state could the sluice gate be opened and discharged.

The samples are sent to the laboratory, and the laboratory technicians work intensively to test not only the content of various organic substances in the samples, but also the hardness and color of the water.

By the time the laboratory technician sent a few test reports to Fang Hanmin, it was already more than two o'clock in the afternoon. Fang Hanmin does not care about the test results of organic ingredients, because the results of the first step of treatment have reassured him, and he is now only concerned about the hardness and color of the water, and only if these two indicators are qualified can the success of the whole process be proven.

After analyzing the relevant indicators of the test report, and then comparing them with the relevant national standards, it was found that the water quality of the outlet of the third-level sedimentation tank was lower than the national water quality standards of Class IV, but higher than the water quality standards of Class 5.

That's a pretty good result! According to the relevant national regulations, the five types of water quality are suitable for agriculture and general landscape water, and the wastewater treated by this process is better than the five types of water quality standards, but slightly lower than the four types of water quality, which fully meets the discharge requirements.

Because it involves wastewater discharge, Fang Hanmin must report the results to the authorities in a timely manner, so that the relevant departments in the factory can contact the local government.

In the afternoon of the same day, the two leaders of the second workshop reported Fang Hanmin's test results to Director Yuan, and Lao Yuan patted his thigh, "This time it's good!" As long as the sewage is effectively treated, the paracetamol API in your second workshop can be produced at full capacity again, which is of great significance to the entire Red Star Pharmaceutical Factory! The development of Red Star Pharmaceutical Factory depends on this product. ”

"But what's next?"

"Do you need to say it? Of course, it is a full resumption of production! ”

"Director Yuan, only half of the equipment in the second workshop is now in operation, the staff is only on half a month, and there is only one set of equipment for the wastewater treatment test, if the workshop fully resumes production, the existing test equipment will definitely not meet the requirements of sewage treatment, what we mean, should we consider expanding the sewage treatment capacity?" Lao Yang explained.

"Oh, you mean asking for investment in the plant to expand wastewater treatment capacity? This is easy to do, as long as it is conducive to the production and development of the Red Star Pharmaceutical Factory, of course the factory will invest, but I want to discuss this matter with the team members and strive for everyone's support. ”

On the morning of the next day, Lao Yuan took time to go to the second workshop to learn about the operation of the wastewater treatment test device, and Fang Hanmin accompanied him throughout the whole process and introduced the process flow and the process principle of each step to Lao Yuan in detail.

Finally, when he came to the third-stage sedimentation tank, Director Yuan pointed to the clear water at the drainage outlet and asked: "After this process treatment, the water quality of the wastewater flowing out of here has reached the fourth to fifth water quality standards stipulated by the state?" ”

"Yes, this water quality is not only fully compliant with agricultural irrigation standards, but can also be used as water for urban landscapes. So, to be precise, the discharge from here should not be called wastewater. Fang Hanmin corrected the factory director's statement.

In the afternoon of the same day, Lao Yuan convened a meeting of the members of the leading group of the whole plant to inform everyone of the results of the wastewater treatment test of the second workshop, and to discuss the investment in the construction of sewage treatment projects.

Before the official start of the meeting, Lao Yuan remembered the laboratory to verify the wastewater treatment program, so he asked the chief engineer Lao Xia about the situation, at this time, the laboratory work has only been carried out for a few days, and no test results have been made, but Lao Xia also went to the site to understand the operation of Fang Hanmin's test device, even if he did not have any gains in the laboratory, the process of steam distillation is also the same thing.

"Overall, steam distillation is effective in eliminating the odor of wastewater, but it remains to be seen how well it will settling because it also has an impact on water quality." Perhaps in the past few days, Lao Xia and his assistant still don't know the final results of Fang Hanmin's experiment.

Director Yuan smiled, "No need to observe, you can go to the test site of the second workshop after the meeting." Subsequently, he gave a detailed briefing to the participants about the test and the final results.

Previously, the other members of the team only knew some news sporadically, and through Lao Yuan's report, they really realized that the temporary worker in the second workshop had really done this big thing!